How big is the rib-eye portion? If the rib-eye sandwich is around 1/3 pound, then you might want to allot 1/4 pound of potatoes each. Most folks feel absolutely stuffed with a full 1/2 pound of food in them. I would probably look at 1/3 pound of finished product per man.
me: I don't drink anymore
Yelonutz: me either, but, then again, I don't drink any less